Stoichiometric formation of conjugated dienyl ketones from 1,3-dienes and ketenes at a ruthenium(0) centre
作者： Masafumi Hirano , Takuya Okamoto , Nobuyuki Komine , Sanshiro Komiya
DOI: 10.1039/C4NJ01001A
关键词:
摘要: A stoichiometric reaction of [Ru(η4-2,3-dimethyl-1,3-butadiene)(η4-1,5-COD)(NCMe)] (1a) with diphenylketene at room temperature produces a new zero-valent complex [Ru(η4-4,5-dimethyl-1,1-diphenylhexa-3,5-diene-2-one)(η4-1,5-COD)(NCMe)] (2aa) in 92% yield. This is the first example conjugated dienyl ketone formation from 1,3-dienes and ketene. Similarly, treatment 1a ethylphenylketene decarbonylated coupling product (Z)-5-alkyl-2,3-dimethyl-5-phenylhepta-1,4-diene (5) 77% yields.
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